Finding the Fourth Proportional to 17,181.30, 23,711.86 and 9,628.91

Step by Step Solution

1. Step 1: Write the proportion equation
   17,181.30 : 23,711.86 = 9,628.91 : x
2. Step 2: Convert to fraction form
   17,181.30/23,711.86 = 9,628.91/x
3. Step 3: Cross multiply
   17,181.30x = 23,711.86 × 9,628.91
4. Step 4: Simplify right side
   17,181.30x = 228,319,362.85
5. Step 5: Solve for x
   x = 228,319,362.85/17,181.30
6. Step 6: Final answer
   x = 13,288.83